Effect of Filler Choice on a Binary Frontal Polymerization System

Viner, Veronika; Viner, Gloria

doi:10.1021/jp112365a

Cited by 13 publications

(20 citation statements)

References 18 publications

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“…For example, cyanoacrylate cannot be activated on demand, often begins to polymerize at the slightest amount of moisture, and tends to be toxic under degradation . Photo‐activatable acrylate or epoxide polymerization‐based bioadhesives tend to have high front temperatures (causing thermal damage) and leave behind toxic monomer by‐products . The diazirine functional group leaves no monomer by‐products and needs no photoinitiator for curing.…”

Section: Resultsmentioning

confidence: 99%

“…[13] Photo-activatable acrylate or epoxide polymerization-based bioadhesives tend to have high front temperatures (causing thermal damage) and leave behind toxic monomer by-products. [14] The diazirine functional group leaves no monomer by-products and needs no photoinitiator for curing. In light of the above, we suggested a novel adhesion mechanism for new polydiazirine biocompatible thin films.…”

Section: General Consideration For Choosing Diazirinementioning

confidence: 99%

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Novel On‐Demand Bioadhesion to Soft Tissue in Wet Environments

Mogal

Papper

Chaurasia

et al. 2013

Macromolecular Bioscience

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Current methods of tissue fixation rely on mechanical-related technologies developed from the clothing and carpentry industries. Herein, a novel bioadhesive method that allows tuneable adhesion and is also applicable to biodegradable polyester substrates is described. Diazirine is the key functional group that allows strong soft tissue crosslinking and on-demand adhesion based on a free radical mechanism. Plasma post-irradiation grafting makes it possible to graft diazirine onto PLGA substrates. When the diazirine-PLGA films, placed on wetted ex vivo swine aortas, are activated with low intensity UV light, lap shear strength of up to 450 ± 50 mN cm(-2) is observed, which is one order of magnitude higher than hydrogel bioadhesives placed on similar soft tissues. The diazirine-modified PLGA thin films could be added on top of previously developed technologies for minimally invasive surgeries. The present work is focused on the chemistry, grafting, and lap shear strength of the alkyl diazirine-modified PLGA bioadhesive films.

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Section: Resultsmentioning

confidence: 99%

Section: General Consideration For Choosing Diazirinementioning

confidence: 99%

Novel On‐Demand Bioadhesion to Soft Tissue in Wet Environments

Mogal

Papper

Chaurasia

et al. 2013

Macromolecular Bioscience

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“…If the monomer solution viscosity is too low, a viscosity modifier such as fumed silica, kaolin, or talc must be added to inhibit buoyancy‐driven convection, which can quench the front . The disadvantage to adding viscosity modifier is that, oftentimes, this addition slows the front even further . A low vapor pressure, high viscosity, and high temperature stable solvent is therefore ideal for FP, and ILs easily meet these criteria .…”

Section: Introductionmentioning

confidence: 99%

Frontal Polymerization of Deep Eutectic Solvents Composed of Acrylic and Methacrylic Acids

Fazende

Phachansitthi

Mota‐Morales

et al. 2017

J. Polym. Sci. Part A: Polym. Chem.

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Frontal polymerization of deep eutectic solvents (DESs) made with acrylic or methacrylic acid as the monomer and hydrogen bond donor was studied. Fronts with acrylic acid and choline chloride propagated more uniformly than with pure acrylic acid, so an exploration into how the DES affected frontal polymerization was performed. The hydrogen bond acceptor of the DES was replaced by several analogs to determine the effect on the DES front behavior. The analogs used were talc, DMSO, lauric acid, and stearic acid, which acted as a heat sink, inert diluent, hydrogen bonding diluent, and inert phase change material, respectively. None of the methacrylic acid-analog systems were able to sustain a front. While the acrylic acid-analog systems did sustain a front (with the exception of stearic acid), none of the fronts replicated the acrylic acid DES behavior. The acrylic acid-talc sample behaved more violently-like pure acrylic acid polymerization-than the acrylic acid DES, and the DMSO and lauric acid samples produced slower fronts than that of the acrylic acid DES. We propose that the reactivity of the acrylic acid and methacrylic acid is enhanced in the DES.

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“…Increases in the acrylate mass percentage amplified these effects, particularly with νf; fronts derived from silica-filled formulations propagated at nearly double the velocity of the kaolin analogues. 125 Differences in convection rationalized this behavior; the higher viscosity of silica containing mixtures prevented buoyancy-driven convection to a greater degree, thereby mitigating convection driven heat-loss processes. 125 Copyright 2011, American Chemical Society.…”

Section: Fillers and Additivesmentioning

confidence: 97%

Frontal Polymerizations: From Chemical Perspectives to Macroscopic Properties and Applications

Suslick

Hemmer

Groce

et al. 2022

Preprint

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The synthesis and processing of thermoplastics and thermoset polymeric materials rely on energy-inefficient and environmentally burdensome manufacturing methods. Frontal polymerization has emerged as an attractive, scalable alternative due to its exploitation of the heat of polymerization, which generally is wasted as unutilized heat-loss. The only external energy needed for frontal polymerization is an initial thermal (or photo) stimulus that locally ignites the reaction. The subsequent reaction exothermicity provides local heating; the transport of this thermal energy to neighboring monomers in either a liquid or gel-like state results in a self-perpetuating reaction zone that provides fully-cured polymeric thermosets and thermoplastics. Propagation of this polymerization front continues through the unreacted monomer media until either all reactants are consumed or sufficient heat-loss stalls further reaction. Several different polymerization mechanisms support frontal processes, including free-radical, cat- or anionic, amine-cure epoxides, and ring-opening metathesis polymerization. The choice of monomer, initiator/catalyst, and additives dictates how fast the polymer front traverses the reactant medium, as well as the maximum temperature achievable. Frontal polymerization enables the preparation of moldable thermoplastics derived from linear polymers. When crosslinking is involved, polymeric networks (e.g., rigid thermosets) are obtainable through a related process best described as a frontal curing reaction. Numerous applications of frontally-generated polymers and thermosets exist, ranging from the reinforcement of porous substrates to the design of patterned composite materials. In this review, we examine in detail the physical and chemical phenomena that govern frontal polymerization, as well as outline the existing applications.

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Effect of Filler Choice on a Binary Frontal Polymerization System

Cited by 13 publications

References 18 publications

Novel On‐Demand Bioadhesion to Soft Tissue in Wet Environments

Novel On‐Demand Bioadhesion to Soft Tissue in Wet Environments

Frontal Polymerization of Deep Eutectic Solvents Composed of Acrylic and Methacrylic Acids

Frontal Polymerizations: From Chemical Perspectives to Macroscopic Properties and Applications

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